For my use, I would rather sharpen them with a grinder I have, then buy a tool that can only sharpen bits. If I had to sharpen like 50 bits a day, then I can see getting a sharpener. I agree that if...

When you said carbide, did you mean titanium? Those last longer, and cost the same. Carbides cost about 10x the price, and a grinder wont sharpen them. Also, what do you mean by grind the heal, havnt...